Patients treated with Metoprolol plus catecholamine depletor should therefore be closely observed for evidence of hypotension or marked bradycardia, which may produce vertigo, syncope, or postural hypotension. The median delay from the onset of symptoms to the initiation of therapy was hours in both the Lopressor- and placebo-treatment groups. Antihypertensive efficacy antagonistic effects onmouseout hidetrail acetaminophen doxylamine phenylephrine span onmouseover showtrail metoprolol acetaminophen pheniramine phenylephrine monitor BP: combo decongestants may decr. This medication should not be used if you have certain medical conditions. Tell your doctor immediately if any of these unlikely but serious side effects occur: symptoms of very slow heartbeat. Keep list of all your medications metoprolol nu prescriptie in intreaga lume with you, and share the list with your doctor and pharmacist. It is freely soluble in soluble in sparingly soluble in slightly soluble in dichloromethane and practically insoluble in ethyl-acetate, acetone, diethylether and heptane.